常温下ABR反应器处理低浓度有机废水降解动力学苏鸿洋

　60　10　　　　　　　　　　　　Vol.60　No.10　200910　　CIESC　Journal　　　October　2009ABR苏鸿洋1,2,夏雪芬3,张亚雷2,周雪飞2(1,350002;2,200092;3,350007):;;;:X703.1　　　　　　:A:0438-1157(2009)10-2614-07KineticsofdilutewastewatertreatmentwithanaerobicbaffledreactoratambienttemperatureSUHongyang1,2,XIAXuefen3,ZHANGYalei2,ZHOUXuefei2(1SchoolofResourceandEnvironment,FujianAgricultureandForestryUniversity,Fuzhou350002,Fujian,China;2KeyStateLaboratoryofPollutionControlandResourcesReuse,SchoolofEnvironment,TongjiUniversity,Shanghai200092,China;3DepartmentofEnvironmentandEquipment,FujianUniversityofTechnology,Fuzhou350007,Fujian,China)Abstract:Inthisstudy,thecharacteristicsandkineticsofsubstratedegradationinanaerobicbaffledreactor(ABR)wereinvestigatedbyusingglucoseasdiluteorganicwastewater.Operationconditions,suchashydraulicresidencetime(HRT),sludgeconcentrationandtemperaturewereprovedtohaveeffectsonthetreatmentefficiencyofABRthroughtheanalysisonthekineticsofsubstratedegradation.DeclininggrowthrateconstantK2wasobtainedinasmallexperimentalABRusingglucoseasinfluent,basedontheexperimentalresultsatdifferenttemperatures.AccordingtotheanalysisofArrheniusrelationship,temperaturedidnotaffectK2greatly.Thisisoneofthereasonswhycomparativelygoodtreatmentefficiencymaystillbeachievedatalowertemperature.Intheexperiment,activationenergy(1.92×104J·mol-1)wasalsoobtainedfromtheArrheniusequation.Keywords:degradationkinetics;anaerobicbaffledreactor;diluteorganicwastewater;ambienttemperature　　2009-03-03,2009-07-13。:。:(1977—),,,。:(20876117);(2006BAJ08B10,2006BAJ04A00)。　　ABRMcCarty[1]2080,,　　Receiveddate:2009-03-03.Correspondingauthor:Prof.ZHOUXuefei,[e-mail]:supportedbytheNationalNaturalScienceFoundationofChina(20876117)andtheNationalKeyTechnologiesR&DProgram(2006BAJ08B10,2006BAJ04A00).　,,[2]。,,,[3-4]。,ABRUASB[4]。ABRUASB、、、pH、、[5-8]。,,ABR,[9]、[10-12]、[6]、[13-14]、[15]、[16][17-20]。,ABR。(HRT)、、、、ABR[21]。ABR、[5,22-26]。,ABR,ABR、、,、HRT、。1　1.1　1,0.75m×0.23m×0.35m,5,53.4L,。ABR,20.7gVSS·L-1。HRT。,、,BOD5∶N∶P()=(150～300)∶5∶1,Fe、Ni、Co、Mg、Zn,300～500mg·L-1,COD400mg·L-1。1.2　,。,44。1。1　ABRTable1　Resultsofbiodegradationofglucosewastewaterinanaerobicbaffledreactor(ABR)Temperature/℃Hydraulicloading/m3·m-3·d-1HRT①/dCODCr/mg·L-1InfluentEffluent29.6(28.1—30.1)2.933.334.365.710.0410.0360.0300.0223423373183042736455827.1(25.4—27.9)3.043.404.445.590.0400.0360.0280.0223183423583213043576924.0(22.7—24.9)2.943.294.135.420.0420.0370.0290.0233183613373153851617817.0(16.1—18.5)2.813.383.945.490.0430.0360.0310.02536735633631249637187　　①HRTreferstohydraulicresidencetimeinABRreactorsludgebed.2　ABR2.1　ABR[17,24-25],UASB。,ABR,,,ABR[3,27]。,ABR。,,,。,。ABR,。,ABR,1。·2615·　10　　:ABR1　ABRFig.1　Modelofanaerobicbaffledreactor(ABR)　　　,Ecken-felderBOD5300mg·L-1,[28],,ABRSem=Se01+t1K21X1×11+t2K22X2×…×11+tmK2mXm=Se0∏mi=111+tiK2iXi(1)(1)η=1-SemSe0=1-∏mi=111+tiK2iXi,(Xi),(ti)。2.2　ABRθ,η。θ=t1+t2+…+tm=∑mi=1ti(2)maxy=1+t1K21X11+t2K22X2…1+tiK2iXi…1+tmK2mXm(3),η=1-∏mi=111+tiK2iXi(3)(2)。,F=1+t1K21X11+t2K22X2…1+tiK2iXi…1+tmK2mXm-λ(∑mi=1ti-θ)(4),λ。Fti=0,F(),t1K211+t2K22X2…1+tiK2iXi…　1+tmK2mXm-λ=01+t1K21X1t2K22…1+tiK2iXi…　1+tmK2mXm-λ=0　　　　　　　　　1+t1K21X11+t2K22X2…1+tiK2iXi…　tmK2m-λ=0(5)(5),ti=1mθ+∑mi=11K2iXi-1K2iXi,max(y)。,;K2,,t=t1=t2=…=tm=θm,。ABRSem=mmθ+∑mi=11K2iXim∏mi=1K2iXiSe0(6)η=1-∏mi=111+tiK2iXi=1-mmθ+∑mi=11K2iXim∏mi=1K2iXi(7)(6),ABRθ、、m;(7),,θ、、m。2.3　　　ABR·2616·　　　　　60　,t1=t2=t3=t4=t5。,,,X1=X2=X3=X4=X5。,,,[5,29]。ABR(),K2,K21=K22=…=K2m=K2。,(6)t1K2X1=1Se5/Se00.2-1(8)1(8),,K2,2。ABRK2。(7)2,K2,。Arrheniusk=Ae-E/RT(9)(9),ABRE。,;,。(9),k=K2,lnK2=lnA-ER1T(10)2(10),1/T-lnK2(3)。E=1.92×104J·mol-1,A=1.56×103,K2K2=1.56×103e-1.92×104/RT(11)3　EFig.3　Calculationchartofactivationenergy　　　2,,ABR,,[18,20-21,29-31]。ABR,:①ABR[3],·2617·　10　　:ABR2　Table2　ActivationenergyvaluesfororganicwastewaterindifferentanaerobicprocessAnaerobicreactorE/J·mol-1Ref.anaerobicsuspended　sludgeprocess6.28×104[32]anaerobicattachedfilm　expandedbed2.48×104[33]UASB3.07×104[34]expandedgranularsludge　bedreactor1.20×104[35]sequencingbatchanaerobic　biologicalfluidizedbed1.67×104—1.26×104[36],UASB[4],,UASB,[5],;②ABR,,,,,,,,,2;③ABR,,,,,。,ABR、、ABR,ABR、。3　　(1)ABR,θ,η=1-mmθ+∑mi=11K2iXim∏mi=1K2iXi,,、m,、。(2)ABR(1.92×104J·mol-1),、。　　　A———E———,J·mol-1Gi———i,ml·L-1·d-1K2———,L·gVSS-1·d-1K2i———i,L·gVSS-1·d-1k———m———Q———、,L·d-1R———,8.314J·mol-1·K-1Sei———i,mg·L-1S0———,mg·L-1T———,Kti———i,dX———,gVSS·L-1η———,%θ———,dReferences[1]　BachmannA,BeardVL,McCartyPL.Performancecharacteristicsoftheanaerobicbaffledreactor.WaterResearch,1985,19(1):99-106[2]　HuangYongheng(),WangJianlong(),WenXianghua(),QianYi().Characteristicsandperformanceofananaerobicbaffledreactor.ChinaWater&Wastewater(),1999(7):18-20[3]　GrobickiA,StuckeyDC.Hydrodynamiccharacteristicsoftheanaerobicbaffledreactor.WaterResearch,1992,26(3):371-378[4]　BarberWP,StuckeyDC.Theinfluenceofstart-upstrategiesontheperformanceofananaerobicbaffledreactor.EnvironmentalTechnology,1998,19(5):489-501[5]　BarberWP,StuckeyDC.Theuseoftheanaerobicbaffledreactor(ABR)forwastewatertreatment:areview.WaterResearch,1999,33(7):1559-1578[6]